True enough, but numbers, and math, can be complex, part real and part imaginary.Except when the math is statistics.
True enough, but numbers, and math, can be complex, part real and part imaginary.Except when the math is statistics.
Statistics don't lie, but statisticians sometimes do. It's the human element.Except when the math is statistics.
Well put.Statistics don't lie, but statisticians sometimes do. It's the human element.
Bruce Lee's simplified technique allowed his 10-year old son to do the Barrowman equations easily ( see attached )
Dave F.
View attachment 564197
1995, I think . . .Any idea when this was written? Reminds me of the forms we used to design pressure vessels back in the early 1980's.
I might have to try this.Bruce Lee's simplified technique allowed his 10-year old son to do the Barrowman equations easily ( see attached )
Dave F.
View attachment 564197
I was wondering if you would show up hereOur old club president, an Aerospace Engineer from a prestigious East Coast University, loved getting out the pencil and paper to do his Barrowmans. Then an oddroc scum, Liberal Arts, Political Science/History major shows up with this abomination claiming he "Mindsimed" it!
View attachment 564314
The horror!
DO THE MATH!
I'm really surprised Bruce wasn't doing these in Excel by then?1995, I think . . .
That's great! I am going to use your "Range of rounding error" statement next time the old President is around. And saying: "I love Bruce's Lee's marshal arts methods" would probably help as well. Pad assignments, here I come! YIPPEE!I was wondering if you would show up here
In truth, I think I’ve got the basic equations down. The more complex design I ran spit out a CP at 482.75mm, against 484 in OpenRocket. I suspect that that’s within the range of rounding errors, especially since I was just dropping the third digit beyond the decimal instead of truly rounding.
I’d be very interested in trying Bruce Lee’s version and digging up a spreadsheet, that sounds like it’d be more tolerable than doing 9 pages of math.
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